The unit is a self-contained transit-type drum mixer complete with planetary gear reduced drive, hydraulic
drive system powered by chassis engine or transmission, self contained water system for slump control and wash
down. Equipped with removable chute assemblies for placing wet concrete and the unit is capable of agitating
and transporting 3.5 cubic yards of concrete at a reasonable slump. Operator controls are situated on the rear
of the unit and in chassis cab for constant drum speed and direction. The drum is capable of 18RPM at 2500
engine RPM in both directions.

1/4” thick spun steel drum head, with
reinforced machined flange to mount gear drive. Fabricated from 3/16
high-strength carbon steel, the drum is fully welded inside and out. A
1-1/4” thick X 2-1/2” wide carbon steel track ring is welded to the rear
of the drum. Charging/discharge fins: two separate helix, 2.5
revolution pitch over length of drum, 3/16 high strength carbon steel.
In the belly of the drum, the fins are 12” tapering to 8” at the
discharge. Fins feature hardened steel rebar welded to the tips and
fold over fins at discharge end of the drum. The fins are fully welded
to drum and equipped with wash holes approximately 12” apart. Man way:
one 22” X 28” is located on front of drum to access interior. The cover
is bolted to main drum with twenty two ½” bolts. The rear of the drum
is supported by two carrier bearings, mounted on an adjustable pedestal.
The bearings feature a hardened exterior with tapered roller bearings
and lip seals for long life. The bearings are further protected by a
felt disk on each side to prevent direct water spray. Each bearing
features a convenient panel mounted grease whip.

Frame

Heavy-duty structural and plate steel frame electrically welded at all joints. The mixer is attached to the
chassis with sixteen 5/8 grade 8 bolts. Eight of the sixteen bolts are equipped with heavy-duty springs to
permit flexing of the chassis frame independent of the mixer frame.

Discharge Chute

A 24” wide discharge chute at drum, tapering to 12” wide on a rotating pedestal is provided. One each
permanently mounted extension chute 34” long and two each removable chutes 34” long are standard equipment. A
structural steel chute holder is provided to hold the two removable chutes. The holder is bolted to the
chassis frame and features rubber straps to hold chutes while in transit. Manual hydraulic pump and cylinder
is provided to raise and lower the rear chute assembly. Locking mechanism for the chute assembly is operable
from either side of the unit and features a transport safety lock.

80 gallon zero pressure water tank is located on the front of the mixer frame. Sight gauges and fill ports
are provided on both sides of tank. A 12VDC powered roller pump delivers water at a rate of 4 GPM with a
maximum pressure of 45 psi. System includes: 25’ hose; water nozzle, hose hook, water filter, tank drains.
Plumbing is provided to inject water into rotating drum from the rear operations station for slump control.

Fenders

Heavy-duty polyethylene fenders with structural steel brackets are provided. Attached to each fender is one
mud flap.

Controls

Electronic controls for speed and direction of drum, water pump (on/off) and optional power discharge chute
control are located in the chassis cab and rear operator’s station. The controls are mounted in a waterproof
aluminum box and feature MIL spec waterproof switches. The electrical system is equipped with a re-settable 30
amp circuit breaker.

Finish

Unit is completely coated with self-etching primer and finished coated with a two component urethane finish.
Mixers are standard one color white.

Parts and Service

Manufacturer carries a complete inventory of parts available for shipment within 24 hours.

One complete operators & parts manual will be supplied with the unit. All operators of the mixer should
read the operators manual in full prior to operation of the mixer. Serious injury or death may result from the
improper or misuse of the mixer body. Questions concerning the operation of the Shortstop Mixers call (937)
325-9851, email: sales@ernestindustries.com

Specifications

In our continuing effort to make improvements, specifications are subject to change without notification.

Chassis

Units can be installed on a conventional or cab
forward chassis. Chassis requires a minimum 16,000-lb payload if the
mixer is to be operated at full 3.5 yard capacity. Generally, a
26,000-lb GVW chassis will accommodate the mixer. Be sure to size the
chassis to meet your DOT and chassis payload requirements. Final
capacity of the mixer is based on the combined weight of mixer & chassis
and weights of ready mixed concrete recipes. See “Chassis Information”
on website or contact Ernest Industries for more information on chassis
requirements.

Wireless remote controls in lieu of hard wired control box. A water proof receiver will be mounted on the
mixer frame under the rear tower. A transmitter shall be provided to control the speed/direction of the drum
and power discharge chute. The receiver will get power from the 12VDC charging system on the diesel engine and
the transmitter shall be powered by two AA batteries. The operating range is 250’.